wicker. that letter is now undergoing further testing. as for the possible suspect, senator mccaskill says the letter came from someone who often writes to lawmakers. >>> former south carolina governor sanford is accused of trespassing. according to court documents. sanford's ex-wife jenny says she caught him going out of the back door of her home in february using his cell phone as a flashlight. their divorce settlement says neither may enter the other's home without permission. a court hearing set for next month. it is two days after sanford's special congressional election. >>> all right, american airlines getting back on track this morning after grounding every single one of its flights in the country. a computer failure in its reservation system forcing american to cancel nearly 750 flights yesterday afternoon. thousands of passengers stranded across the country. some forced to wait for hours. >> there is nothing you can do. you have to stand in line and hope you can get on your flight.